US5008902A - Automatic baud rate detection - Google Patents
Automatic baud rate detection Download PDFInfo
- Publication number
- US5008902A US5008902A US07/302,172 US30217289A US5008902A US 5008902 A US5008902 A US 5008902A US 30217289 A US30217289 A US 30217289A US 5008902 A US5008902 A US 5008902A
- Authority
- US
- United States
- Prior art keywords
- data
- baud rate
- autobaud
- bits
- samples
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000001514 detection method Methods 0.000 title description 9
- 238000000034 method Methods 0.000 claims abstract description 19
- 230000005540 biological transmission Effects 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 6
- 230000003134 recirculating effect Effects 0.000 claims description 5
- 238000005070 sampling Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 abstract description 9
- 230000001360 synchronised effect Effects 0.000 abstract description 5
- 230000006870 function Effects 0.000 description 8
- 240000007320 Pinus strobus Species 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000036316 preload Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000013480 data collection Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0262—Arrangements for detecting the data rate of an incoming signal
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Communication Control (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
Description
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/302,172 US5008902A (en) | 1989-01-25 | 1989-01-25 | Automatic baud rate detection |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/302,172 US5008902A (en) | 1989-01-25 | 1989-01-25 | Automatic baud rate detection |
Publications (1)
Publication Number | Publication Date |
---|---|
US5008902A true US5008902A (en) | 1991-04-16 |
Family
ID=23166579
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/302,172 Expired - Lifetime US5008902A (en) | 1989-01-25 | 1989-01-25 | Automatic baud rate detection |
Country Status (1)
Country | Link |
---|---|
US (1) | US5008902A (en) |
Cited By (40)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0544965A1 (en) * | 1991-11-29 | 1993-06-09 | International Business Machines Corporation | Method for setting the asynchronous transmission characteristics in a telecommunication equipment including a SCC |
US5230010A (en) * | 1990-09-26 | 1993-07-20 | American Telephone & Telegraph Company | Fractional rate modulation |
US5251236A (en) * | 1991-04-05 | 1993-10-05 | At&T Paradyne Corporation | Fractional rate modem with trellis |
EP0601216A1 (en) * | 1992-11-13 | 1994-06-15 | Siemens Aktiengesellschaft | Serial information transmission method |
US5490209A (en) * | 1994-02-09 | 1996-02-06 | Harris Corporation | Autobaud rate detection mechanism |
US5570297A (en) * | 1994-05-31 | 1996-10-29 | Timex Corporation | Method and apparatus for synchronizing data transfer rate from a cathode ray tube video monitor to a portable information device |
US5627858A (en) * | 1992-07-20 | 1997-05-06 | Telefonaktiebolaget L M Ericsson | Multi-channel autobauding circuit |
US5631924A (en) * | 1995-06-19 | 1997-05-20 | Motorola, Inc. | Method and apparatus for baud rate detection in an FM receiver using parameters unrelated to baud rate as confirmation |
US5654983A (en) * | 1994-06-10 | 1997-08-05 | Hayes Microcomputer Products, Inc. | Method and apparatus of operating data communications equipment in command mode and autobauding |
WO1997036220A2 (en) * | 1996-03-26 | 1997-10-02 | Timex Corporation | Optical transmission of serial data |
US5689511A (en) * | 1995-01-19 | 1997-11-18 | Oki Electric Industry Co., Ltd. | Data receiver for receiving code signals having a variable data rate |
US5715176A (en) * | 1996-01-23 | 1998-02-03 | International Business Machines Corporation | Method and system for locating a frame position in an MPEG data stream |
US5815127A (en) * | 1993-11-22 | 1998-09-29 | Timex Corporation | Method and apparatus for downloading information from a controllable light source to a portable information device |
US5901191A (en) * | 1995-01-18 | 1999-05-04 | Nec Corporation | Baud rate mixing transmission system |
US5943364A (en) * | 1995-02-16 | 1999-08-24 | Canon Kabushiki Kaisha | Data communication apparatus for setting bit rate according to line quality |
US5982837A (en) * | 1997-06-16 | 1999-11-09 | Lsi Logic Corporation | Automatic baud rate detector |
US6031848A (en) * | 1997-05-07 | 2000-02-29 | 3Com Corporation | Apparatus for an improved ISDN terminal adapter having baud rate unblocking and methods for use therein |
US6049888A (en) * | 1996-03-04 | 2000-04-11 | Scanning Devices, Inc. | Method and apparatus for automatic communication configuration |
US6069900A (en) * | 1996-11-19 | 2000-05-30 | Nec Corporation | Baud rate generator |
US6097754A (en) * | 1998-02-25 | 2000-08-01 | Lucent Technologies, Inc. | Method of automatically detecting the baud rate of an input signal and an apparatus using the method |
US6157689A (en) * | 1998-03-16 | 2000-12-05 | Ericsson Inc. | Automatic speed detection for asynchronous serial communications |
US6163586A (en) * | 1998-12-01 | 2000-12-19 | Philips Electronics North America Corp. | Autobaud/autoecho method |
US6198785B1 (en) | 1997-09-29 | 2001-03-06 | Lucent Technologies Inc. | Autobaud rate detection and adjustment |
US20020122476A1 (en) * | 2000-12-29 | 2002-09-05 | Lg Electronics Inc. | Apparatus and method for detecting baudrate in a universal asynchronous receiver/transmitter |
US20020172315A1 (en) * | 2001-05-17 | 2002-11-21 | Sullivan Terence Sean | Data rate calibration for asynchronous serial communications |
US20040022306A1 (en) * | 2000-07-12 | 2004-02-05 | International Business Machines Corporation | Speed negotiation for serial transceivers |
US20040073847A1 (en) * | 2002-10-11 | 2004-04-15 | Booth Stephen Craig | Intelligent power cycling of a wireless modem |
US6847615B1 (en) | 1997-11-13 | 2005-01-25 | Optimay Corporation | Baud rate detection in serial data transmission |
US20050198636A1 (en) * | 2004-02-26 | 2005-09-08 | International Business Machines Corporation | Dynamic optimization of batch processing |
US20050207356A1 (en) * | 2004-03-17 | 2005-09-22 | Gross Lawrence C Jr | Stand-alone device for determining communication parameters and channel configuration of an asynchronous serial channel using a user determined methodology |
US20060059276A1 (en) * | 2002-11-09 | 2006-03-16 | Koninklijke Philips Electronics N.V. | Integrated circuit |
EP1645092A1 (en) * | 2003-07-15 | 2006-04-12 | Special Devices, Inc. | Continuously variable rate asynchronous data transfer |
US7251270B2 (en) | 2000-06-20 | 2007-07-31 | Paradyne Corporation | Systems and methods for fractional bit rate encoding in a communication system |
US20070226377A1 (en) * | 2006-02-09 | 2007-09-27 | Dell Products L.P. | Detecting parameters of a system UART and matching those parameters in a serial-over-LAN (SOL) UART |
US20070233920A1 (en) * | 2006-04-03 | 2007-10-04 | Denso Corporation | Communication system, communication device and method for determining duty ratio of PWM control |
US20080120436A1 (en) * | 2002-01-31 | 2008-05-22 | Sigmatel, Inc. | Expansion Peripheral Techniques for Portable Audio Player |
US20100232487A1 (en) * | 2003-03-31 | 2010-09-16 | Research In Motion Limited | Bit rate matching system and method |
US10200241B2 (en) | 2015-05-13 | 2019-02-05 | Stryker Corporation | Method of wireless discovery and networking of medical devices in care environments |
US10248436B2 (en) * | 2015-08-21 | 2019-04-02 | Canon Kabushiki Kaisha | Electronic apparatus controlling connection with accessory device, accessory device, control methods therefor, and storage mediums storing control programs therefor |
CN113810154A (en) * | 2020-06-17 | 2021-12-17 | 国网信息通信产业集团有限公司 | Serial port communication self-adaption method and device and remote communication module |
Citations (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3626306A (en) * | 1969-10-23 | 1971-12-07 | Gen Electric | Automatic baud synchronizer |
US3696338A (en) * | 1970-08-20 | 1972-10-03 | Tektronix Inc | Data terminal-computer serial interface system having automatic baud rate switching |
US4225960A (en) * | 1979-03-01 | 1980-09-30 | Westinghouse Electric Corp. | Automatic synchronizing system for digital asynchronous communications |
US4270205A (en) * | 1979-02-27 | 1981-05-26 | Phillips Petroleum Company | Serial line communication system |
US4390947A (en) * | 1979-02-27 | 1983-06-28 | Phillips Petroleum Company | Serial line communication system |
US4418322A (en) * | 1980-04-03 | 1983-11-29 | Amp Incorporated | Automatic digital circuit for synchronizing with a variable baud rate generator |
US4468752A (en) * | 1981-09-21 | 1984-08-28 | Tandy Corporation | Data synchronization apparatus |
US4547877A (en) * | 1983-06-09 | 1985-10-15 | At&T Bell Laboratories | System for switching multirate digitized voice and data |
US4597089A (en) * | 1983-07-11 | 1986-06-24 | Hycom Incorporated | Single pulse fast learn modem |
US4606044A (en) * | 1983-03-09 | 1986-08-12 | Ricoh Company, Ltd. | Adjusting data transmission rate based on received signal quality |
US4663766A (en) * | 1984-10-10 | 1987-05-05 | Paradyne Corporation | Method of determining automatically the rate of data signals in a modem |
US4726040A (en) * | 1984-10-09 | 1988-02-16 | American Telephone And Telegraph Company, At&T Bell Laboratories | Burst demodulator |
US4745621A (en) * | 1985-10-04 | 1988-05-17 | Ando Electric Co., Ltd. | Method of and apparatus for detecting minimum bit number of received data |
US4748625A (en) * | 1986-07-28 | 1988-05-31 | Motorola, Inc. | Optimum baud rate transmission system |
US4756007A (en) * | 1984-03-08 | 1988-07-05 | Codex Corporation | Adaptive communication rate modem |
US4761800A (en) * | 1987-03-02 | 1988-08-02 | American Telephone And Telegraph Company, At&T Bell Laboratories | Method and apparatus for detecting a rate of data transmission |
-
1989
- 1989-01-25 US US07/302,172 patent/US5008902A/en not_active Expired - Lifetime
Patent Citations (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3626306A (en) * | 1969-10-23 | 1971-12-07 | Gen Electric | Automatic baud synchronizer |
US3696338A (en) * | 1970-08-20 | 1972-10-03 | Tektronix Inc | Data terminal-computer serial interface system having automatic baud rate switching |
US4270205A (en) * | 1979-02-27 | 1981-05-26 | Phillips Petroleum Company | Serial line communication system |
US4390947A (en) * | 1979-02-27 | 1983-06-28 | Phillips Petroleum Company | Serial line communication system |
US4225960A (en) * | 1979-03-01 | 1980-09-30 | Westinghouse Electric Corp. | Automatic synchronizing system for digital asynchronous communications |
US4418322A (en) * | 1980-04-03 | 1983-11-29 | Amp Incorporated | Automatic digital circuit for synchronizing with a variable baud rate generator |
US4468752A (en) * | 1981-09-21 | 1984-08-28 | Tandy Corporation | Data synchronization apparatus |
US4606044A (en) * | 1983-03-09 | 1986-08-12 | Ricoh Company, Ltd. | Adjusting data transmission rate based on received signal quality |
US4547877A (en) * | 1983-06-09 | 1985-10-15 | At&T Bell Laboratories | System for switching multirate digitized voice and data |
US4597089A (en) * | 1983-07-11 | 1986-06-24 | Hycom Incorporated | Single pulse fast learn modem |
US4756007A (en) * | 1984-03-08 | 1988-07-05 | Codex Corporation | Adaptive communication rate modem |
US4726040A (en) * | 1984-10-09 | 1988-02-16 | American Telephone And Telegraph Company, At&T Bell Laboratories | Burst demodulator |
US4663766A (en) * | 1984-10-10 | 1987-05-05 | Paradyne Corporation | Method of determining automatically the rate of data signals in a modem |
US4745621A (en) * | 1985-10-04 | 1988-05-17 | Ando Electric Co., Ltd. | Method of and apparatus for detecting minimum bit number of received data |
US4748625A (en) * | 1986-07-28 | 1988-05-31 | Motorola, Inc. | Optimum baud rate transmission system |
US4761800A (en) * | 1987-03-02 | 1988-08-02 | American Telephone And Telegraph Company, At&T Bell Laboratories | Method and apparatus for detecting a rate of data transmission |
Cited By (62)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5230010A (en) * | 1990-09-26 | 1993-07-20 | American Telephone & Telegraph Company | Fractional rate modulation |
US5280503A (en) * | 1990-09-26 | 1994-01-18 | At&T Bell Laboratories | Data communication system with data rate throttling |
US5251236A (en) * | 1991-04-05 | 1993-10-05 | At&T Paradyne Corporation | Fractional rate modem with trellis |
US5367541A (en) * | 1991-11-29 | 1994-11-22 | International Business Machines Corporation | Method and apparatus for setting asynchronous transmission characteristics in a telecommunication equipment including a SCC |
EP0544965A1 (en) * | 1991-11-29 | 1993-06-09 | International Business Machines Corporation | Method for setting the asynchronous transmission characteristics in a telecommunication equipment including a SCC |
US5627858A (en) * | 1992-07-20 | 1997-05-06 | Telefonaktiebolaget L M Ericsson | Multi-channel autobauding circuit |
EP0601216A1 (en) * | 1992-11-13 | 1994-06-15 | Siemens Aktiengesellschaft | Serial information transmission method |
US5815127A (en) * | 1993-11-22 | 1998-09-29 | Timex Corporation | Method and apparatus for downloading information from a controllable light source to a portable information device |
US5490209A (en) * | 1994-02-09 | 1996-02-06 | Harris Corporation | Autobaud rate detection mechanism |
US5570297A (en) * | 1994-05-31 | 1996-10-29 | Timex Corporation | Method and apparatus for synchronizing data transfer rate from a cathode ray tube video monitor to a portable information device |
US5654983A (en) * | 1994-06-10 | 1997-08-05 | Hayes Microcomputer Products, Inc. | Method and apparatus of operating data communications equipment in command mode and autobauding |
US5901191A (en) * | 1995-01-18 | 1999-05-04 | Nec Corporation | Baud rate mixing transmission system |
US5689511A (en) * | 1995-01-19 | 1997-11-18 | Oki Electric Industry Co., Ltd. | Data receiver for receiving code signals having a variable data rate |
US5943364A (en) * | 1995-02-16 | 1999-08-24 | Canon Kabushiki Kaisha | Data communication apparatus for setting bit rate according to line quality |
US5631924A (en) * | 1995-06-19 | 1997-05-20 | Motorola, Inc. | Method and apparatus for baud rate detection in an FM receiver using parameters unrelated to baud rate as confirmation |
US5715176A (en) * | 1996-01-23 | 1998-02-03 | International Business Machines Corporation | Method and system for locating a frame position in an MPEG data stream |
US6049888A (en) * | 1996-03-04 | 2000-04-11 | Scanning Devices, Inc. | Method and apparatus for automatic communication configuration |
WO1997036220A3 (en) * | 1996-03-26 | 1997-12-24 | Timex Corp | Optical transmission of serial data |
WO1997036220A2 (en) * | 1996-03-26 | 1997-10-02 | Timex Corporation | Optical transmission of serial data |
US5835388A (en) * | 1996-03-26 | 1998-11-10 | Timex Corporation | Apparatus and method for optical transmission of serial data using a serial communications port |
US6069900A (en) * | 1996-11-19 | 2000-05-30 | Nec Corporation | Baud rate generator |
US6031848A (en) * | 1997-05-07 | 2000-02-29 | 3Com Corporation | Apparatus for an improved ISDN terminal adapter having baud rate unblocking and methods for use therein |
US5982837A (en) * | 1997-06-16 | 1999-11-09 | Lsi Logic Corporation | Automatic baud rate detector |
US6198785B1 (en) | 1997-09-29 | 2001-03-06 | Lucent Technologies Inc. | Autobaud rate detection and adjustment |
US6847615B1 (en) | 1997-11-13 | 2005-01-25 | Optimay Corporation | Baud rate detection in serial data transmission |
US6097754A (en) * | 1998-02-25 | 2000-08-01 | Lucent Technologies, Inc. | Method of automatically detecting the baud rate of an input signal and an apparatus using the method |
US6157689A (en) * | 1998-03-16 | 2000-12-05 | Ericsson Inc. | Automatic speed detection for asynchronous serial communications |
US6163586A (en) * | 1998-12-01 | 2000-12-19 | Philips Electronics North America Corp. | Autobaud/autoecho method |
US7251270B2 (en) | 2000-06-20 | 2007-07-31 | Paradyne Corporation | Systems and methods for fractional bit rate encoding in a communication system |
US6771694B1 (en) * | 2000-07-12 | 2004-08-03 | International Business Machines Corporation | Speed negotiation for serial transceivers |
US7359432B2 (en) | 2000-07-12 | 2008-04-15 | International Business Machines Corporation | Speed negotiation for serial transceivers |
US20040022306A1 (en) * | 2000-07-12 | 2004-02-05 | International Business Machines Corporation | Speed negotiation for serial transceivers |
US20070110143A1 (en) * | 2000-07-12 | 2007-05-17 | Baumgartner Steven J | Speed Negotiation for Serial Transceivers |
US7212589B2 (en) | 2000-07-12 | 2007-05-01 | International Business Machines Corporation | Speed negotiation for serial transceivers |
US7006561B2 (en) * | 2000-12-29 | 2006-02-28 | Lg Electronics Inc. | Apparatus and method for detecting baudrate in a universal asynchronous receiver/transmitter |
US20020122476A1 (en) * | 2000-12-29 | 2002-09-05 | Lg Electronics Inc. | Apparatus and method for detecting baudrate in a universal asynchronous receiver/transmitter |
US6944248B2 (en) | 2001-05-17 | 2005-09-13 | Bluebrook Associates Llc | Data rate calibration for asynchronous serial communications |
US20020172315A1 (en) * | 2001-05-17 | 2002-11-21 | Sullivan Terence Sean | Data rate calibration for asynchronous serial communications |
US20080120436A1 (en) * | 2002-01-31 | 2008-05-22 | Sigmatel, Inc. | Expansion Peripheral Techniques for Portable Audio Player |
US20040073847A1 (en) * | 2002-10-11 | 2004-04-15 | Booth Stephen Craig | Intelligent power cycling of a wireless modem |
US7308611B2 (en) * | 2002-10-11 | 2007-12-11 | Agilent Technologies, Inc. | Intelligent power cycling of a wireless modem |
US7937516B2 (en) * | 2002-11-09 | 2011-05-03 | Nxp B.V. | Integrated circuit with LIN-protocol transmission |
US20060059276A1 (en) * | 2002-11-09 | 2006-03-16 | Koninklijke Philips Electronics N.V. | Integrated circuit |
US8374321B2 (en) * | 2003-03-31 | 2013-02-12 | Motorola Mobility Llc | Bit rate matching system and method |
US20100232487A1 (en) * | 2003-03-31 | 2010-09-16 | Research In Motion Limited | Bit rate matching system and method |
EP1645092A1 (en) * | 2003-07-15 | 2006-04-12 | Special Devices, Inc. | Continuously variable rate asynchronous data transfer |
US8176848B2 (en) | 2003-07-15 | 2012-05-15 | Austin Star Detonator Company | Electronic blasting system having a pre-fire countdown with multiple fire commands |
US7577756B2 (en) | 2003-07-15 | 2009-08-18 | Special Devices, Inc. | Dynamically-and continuously-variable rate, asynchronous data transfer |
US20090283004A1 (en) * | 2003-07-15 | 2009-11-19 | Gimtong Teowee | Constant-current, rail-voltage regulated charging electronic detonator |
US7971531B2 (en) | 2003-07-15 | 2011-07-05 | Austin Star Detonator Company | Method for detecting an unknown or unmarked slave device such as in an electronic blasting system |
US7975612B2 (en) | 2003-07-15 | 2011-07-12 | Austin Star Detonator Company | Constant-current, rail-voltage regulated charging electronic detonator |
US20050198636A1 (en) * | 2004-02-26 | 2005-09-08 | International Business Machines Corporation | Dynamic optimization of batch processing |
US20050207356A1 (en) * | 2004-03-17 | 2005-09-22 | Gross Lawrence C Jr | Stand-alone device for determining communication parameters and channel configuration of an asynchronous serial channel using a user determined methodology |
US20070226377A1 (en) * | 2006-02-09 | 2007-09-27 | Dell Products L.P. | Detecting parameters of a system UART and matching those parameters in a serial-over-LAN (SOL) UART |
US7982512B2 (en) | 2006-04-03 | 2011-07-19 | Denso Corporation | Communication system communication device and method for determining duty ratio of PWM control |
US20070233920A1 (en) * | 2006-04-03 | 2007-10-04 | Denso Corporation | Communication system, communication device and method for determining duty ratio of PWM control |
US7631212B2 (en) * | 2006-04-03 | 2009-12-08 | Denso Corporation | Communication system, communication device and method for determining duty ratio of PWM control |
US10200241B2 (en) | 2015-05-13 | 2019-02-05 | Stryker Corporation | Method of wireless discovery and networking of medical devices in care environments |
US11115265B2 (en) | 2015-05-13 | 2021-09-07 | Stryker Corporation | Method of wireless discovery and networking of medical devices in care environments |
US11765026B2 (en) | 2015-05-13 | 2023-09-19 | Stryker Corporation | Method of wireless discovery and networking of medical devices in care environments |
US10248436B2 (en) * | 2015-08-21 | 2019-04-02 | Canon Kabushiki Kaisha | Electronic apparatus controlling connection with accessory device, accessory device, control methods therefor, and storage mediums storing control programs therefor |
CN113810154A (en) * | 2020-06-17 | 2021-12-17 | 国网信息通信产业集团有限公司 | Serial port communication self-adaption method and device and remote communication module |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5008902A (en) | Automatic baud rate detection | |
US10782344B2 (en) | Technique for determining performance characteristics of electronic devices and systems | |
US4166980A (en) | Method and apparatus for signal recognition | |
JP2641999B2 (en) | Data format detection circuit | |
US4541105A (en) | Counting apparatus and method for frequency sampling | |
US4071821A (en) | Quadrature correlation phase determining apparatus | |
US5005191A (en) | System for synchronizing data frame groups in a serial bit stream | |
US6163586A (en) | Autobaud/autoecho method | |
JPS61296843A (en) | Signal/noise ratio exponent generation apparatus and method for coding digital data | |
US5637994A (en) | Waveform measurement | |
KR20050007347A (en) | Semiconductor test device | |
US4255795A (en) | Programmable binary correlator | |
JPH08503776A (en) | Method and apparatus for identifying computer network signals | |
US4884020A (en) | Phase detection system | |
EP0389696A1 (en) | Serial data receiver | |
US3934097A (en) | Multifrequency tone detection | |
US4888588A (en) | Digital trigger | |
US6590509B2 (en) | Data recovery through event based equivalent time sampling | |
EP0010922A1 (en) | Device for determining periodic components of an alternating signal | |
JP2556369B2 (en) | Overshoot position detection method for analog waveforms | |
SU663123A1 (en) | Discrete information receiver | |
JPH04360334A (en) | Start-stop synchronization reception circuit | |
JP2923979B2 (en) | Frequency detection circuit | |
JPH04354220A (en) | Start bit detection circuit | |
JPH02292934A (en) | Automatic detector for data transmission speed and parity |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: IBM CORPORATION, A CORP. OF SANTA CLARA, CALIFORNI Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:KEY, GARY R.;BLACK, DAVID C.;REEL/FRAME:005034/0632 Effective date: 19890124 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
AS | Assignment |
Owner name: ROLM SYSTEMS, CALIFORNIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:INTERNATIONAL BUSINESS MACHINE CORPORATION;REEL/FRAME:006364/0959 Effective date: 19920928 |
|
AS | Assignment |
Owner name: ROLM SYSTEMS, CALIFORNIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:INTERNATIONAL BUSINESS MACHINE CORPORATION;REEL/FRAME:006369/0783 Effective date: 19920928 |
|
REFU | Refund |
Free format text: REFUND PROCESSED. MAINTENANCE FEE HAS ALREADY BEEN PAID (ORIGINAL EVENT CODE: R160); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
FEPP | Fee payment procedure |
Free format text: PAYER NUMBER DE-ASSIGNED (ORIGINAL EVENT CODE: RMPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
CC | Certificate of correction | ||
AS | Assignment |
Owner name: SIEMENS BUSINESS COMMUNICATION SYSTEMS, INC., CALI Free format text: CERTIFICATE OF AMENDMENT OF CERTIFICATE OF INCORPORATION;ASSIGNOR:SIEMENS ROLM COMMUNICATIONS INC.;REEL/FRAME:009214/0425 Effective date: 19961001 Owner name: SIEMENS ROLM COMMUNICATIONS INC., CALIFORNIA Free format text: CERTIFICATE OF AMENDMENT OF CERTIFICATE OF INCORPORATION;ASSIGNOR:ROLM COMPANY, INC.;REEL/FRAME:009214/0408 Effective date: 19940930 Owner name: ROLM COMPANY, INC., CALIFORNIA Free format text: CERTIFICATE OF INCORPORATION;ASSIGNOR:ROLM COMPANY;REEL/FRAME:009214/0411 Effective date: 19940829 Owner name: ROLM COMPANY, CALIFORNIA Free format text: CERTIFICATE AND SUPPORTING DOCUMENTS;ASSIGNOR:ROLM SYSTEMS;REEL/FRAME:009214/0416 Effective date: 19960626 |
|
FPAY | Fee payment |
Year of fee payment: 8 |
|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Free format text: PAYER NUMBER DE-ASSIGNED (ORIGINAL EVENT CODE: RMPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
FPAY | Fee payment |
Year of fee payment: 12 |